Correction of the Cavo-varus foot using Orthosolutions Titanium screws and Ultos plate surgical technique
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Pes Cavovarus describes a deformity of the foot characterised by a high arch, and a plantar-flexed 1st ray. Whilst some subtle deformities may represent a physiological normal variant, pes cavovarus is often associated with neurological disorders; the commonest being Charcot-Marie-Tooth disease (Hereditary sensori-motor neuropathy).
The deformity progresses as a result of asymmetrical denervation of the flexor and extensor musculature. The power of the Gastocnemius-Soleus, Tibialis posterior and Peroneus Longus muscles are usually preserved relative to the Peroneus brevis, tibialis anterior and intrinsic foot muscles, which are demonstrably weak.
The driver for the deformity is usually a plantar flexion of the 1st metatarsal. In order to engage the ground, the rest of the forefoot compensates by an obligatory supination. The effect of the forefoot supination is (via the forefoot-hindfoot couple) an inversion of the hindfoot, producing the characteristic varus heel. The concept of contracture or tightness of the plantar fascia remains controversial.
In those patients with flexible deformity, joint preserving surgery can be considered and such a case is detailed here treated with osteotomies and tendon transfers.
Author: Mr Nick Cullen FRCS (Tr & Orth)
Institution: The Royal National Orthopaedic Hospital , Stanmore ,London ,UK.
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The pass mark is 75%.
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- Operation Quiz – 1 CPD point
- Surgical steps Quiz – 1/4 CPD point
- Implants Quiz – 1/4 CPD point
- Problem case Quiz – 1/2 CPD point
One CPD point equates to one hour of academic activity
Welcome to the Professional Development question section. The objective of taking these tests is to demonstrate that you have understood all aspects of the assessment and management of patients requiring surgical intevention. On successful completion you will receive a certificate accredited by both the Royal College of Surgeons of both England and Edinburgh as well as the British Orthopaedic Association.
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